CVE-2024-35540
CWE-79Published: August 20, 2024· Updated: Jun 17, 2026
Official Description
A stored cross-site scripting (XSS) vulnerability in Typecho v1.3.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
Risk Analysis
Typecho v1.3.0 is affected by a stored cross-site scripting (XSS) vulnerability that allows attackers to execute arbitrary web scripts or HTML. The critical CVSS score reflects the potential for significant impact on system integrity and confidentiality.
A proof-of-concept exploit has been published for this vulnerability, though it is not in the CISA KEV catalog. The flaw is remotely exploitable.
Apply the latest security updates provided by the Typecho project to address the XSS vulnerability.
Technical Analysis
CVE-2024-35540 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.0.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
A proof-of-concept (PoC) exploit exists for CVE-2024-35540. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-79)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2024-35540 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts